See, that's the thing....it hasn't been 5 days. It's been 6 or 7 months. I don't believe she wants the relationship. If she did, she would have given some indication that she did in those 6 or 7 months. It's not about giving up on someone because of their mental health. If she wanted this relationship, she would have, by now, done SOMETHING to indicate that she loved him. She hasn't. In fact, she's cut off contact ENTIRELY.
It's not about her anymore. Even if she were to come back eventually, the relationship is already ruined. It's about him, him being happy, him having the kind of life he wants to have, him finding something in life that isn't going to hold him back or keep in stuck in a holding pattern hoping and praying that his wife decides he's good enough for her again. She has written him off and I'm sorry, but I don't think that is all due her mental health. She doesn't trust him, as is evident by the fact that she moved out MONTHS ago.
Love is not enough, you need more than that. And at some point, you have to start thinking about yourself and doing what's best for you. Holding on to someone who has proven over and over again that she doesn't want anything to do with you is NOT the best thing for anyone.